ovl: allocate anon bdev per unique lower fs

Browse source

Instead of allocating an anonymous bdev per lower layer, allocate
one anonymous bdev per every unique lower fs that is different than
upper fs.

Every unique lower fs is assigned an fsid > 0 and the number of
unique lower fs are stored in ofs->numlowerfs.

The assigned fsid is stored in the lower layer struct and will be
used also for inode number multiplexing.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

...

This commit is contained in:

Amir Goldstein 2018-03-28 20:22:41 +03:00 • committed by Miklos Szeredi

parent da309e8c05

commit 5148626b80

4 changed files with 72 additions and 28 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

9

fs/overlayfs/inode.c

View file

18

fs/overlayfs/ovl_entry.h

View file

66

fs/overlayfs/super.c

View file

7

fs/overlayfs/util.c

View file